Writing

How a hand-written Vite single-pager became a content engine: Astro 7 collections, build-time Pagefind search, per-post social cards, and a deploy on Cloudflare that fires on every push.

Systems/6 min

Fitting five polynomial regression architectures to four EEG input channels using nothing but normal equations, then comparing them with RSS, log-likelihood, AIC and BIC, validating on a held-out split, and running rejection ABC — plus the two places where the numbers quietly disagreed with the method.

ML/15 minR

Notes on moving tree layout out of the client and into stored geometry, then rendering only the viewport across three levels of detail — so draw cost tracks what's on screen instead of how big the tree is.

Algorithms/11 min

Working through NAT traversal and bulk transfer over an unreliable datagram protocol — rendezvous, simultaneous open, keepalives, chunking, integrity and flow control — by building a peer-to-peer file sharing system in Go.

Systems/9 minGo

Working out the forward pass, softmax with cross-entropy, the chain rule and mini-batch gradient descent by building a multi-layer perceptron in plain Java — no ML libraries — and learning why data layout decides what the algorithm can express.

ML/9 minJava

Working through structured logging, trace correlation, agent-based instrumentation and the ship-parse-store-visualise pipeline by wiring a Spring Boot service to Elasticsearch, Logstash, Kibana and Elastic APM in Docker Compose.

Systems/8 minJava

Working through constraint search — pruned tree exploration, candidate checks, recursive descent and undo — by building a browser Sudoku solver that animates its own search using async/await to yield to the event loop.

Algorithms/6 minJavaScript

Working through genome design, fitness shaping, selection, mutation and elitism by building a browser simulation where a population of dots evolves its way to a goal — and learning what population diversity actually buys you.

Algorithms/7 minJavaScript